Cosmos

                                                                             Cosmos

The universe is the cradle of life, a never-ending source of every form of life and the expression of its creation .

The A and Ω, the end of the beginning and the beginning of the end. The Universe is the totality of everything that exists, has existed, and ever will exist.

The Universe includes all of space time; the entire contents of outer space; all matter, energy, dark matter, and dark energy; all galaxies, stars, and planets; all humans and every living thing; all molecules, atoms, subatomic particles, photons; all physical constants, physical laws and fundamental interactions. The Universe can even be understood to encompass all of mathematics, all concepts and ideas, and all thoughts and emotions.

 The part of the Universe that we can see, referred to as the observable universe, has a diameter of about 93 billion light years (28 billion parsecs) and a volume of 4×1083 liters.

The size of the whole Universe is not known – it may be infinite. Considering only ordinary matter, the density of the.

Universe is 9.9 x 10−30 g/cm3, equivalent to a mass density of 5.9 protons per cubic meter.

 Space is expanding, and the rate of its expansion is increasing. Astronomical observations have led to inferences of the earlier stages of the Universe, which appear to have been governed by the same physical laws and constants